It seems like you have given it serious thought and researched why you should go through with it. Have you ever considered the IUD? My yearbook teacher had her first child in her early forties and she had a healthy baby with no problems. I don't know a whole lot about cancer or c-sections and this procedure, but it seems like you have done your research. Also realize that this procedure is a surgery, and with every surgery there can be complications including death from the anesthesia. With my hospital I had to take a mandatory class if I was considering sterilization, I suggest you take a long-term contraception class as well to get all of the facts. They said that the recovery time was only a few days, but I guess I missed what they said about heavy lifting. Even if it took a few weeks, your school should understand that you are recovering from a surgery. Schools can easily get a substitute and they should be able to pay for your medical leave.

I am worried about this crunch-time you are having. You seemed to be rushing yourself to make this decision which is never a good thing when it is permanent. I don't see why you absolutely HAVE to get this procedure now with so little time to recover when you can wait till 2015 and continue using the birth control you are currently on, then you can decided whether you still want to have children by that time. There is always adoption as well. Best of luck.